According to park officials, rangers were notified of a cardiac emergency at a vehicle pull-out area on Trail Ridge Road, a half-mile west of Forest Canyon Overlook. The area is at an elevation of 11,800 feet.

Park rangers and emergency personnel from an Estes Park Medical Center ambulance reached the woman and began advanced medical care, but the woman remained unresponsive. She was pronounced dead at the scene.

The woman was with family members. Her identity and hometown will be not be released until other family is notified.